Eastern China Sea
IHO sea area 50 · 118° to 131° E, 24° to 33° N
- in force
- 1
- last 12 months
- 7
- archive messages
- 545
- categories
- 15
What the archive shows
545 messages are recorded since 1977-02-05 for the Eastern China Sea. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Cable ops accounts for 220 of 545 recorded messages (40%), the largest category group in this selection.
The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.
- An older warning still listed in force · issued 2023-07-28 08:00ZA large buoy exists in the East China Sea at 31 degrees north, 124 degrees east.
In force now · 1
Longest in force
By year
77
97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
By category · available archive
| Cable ops | 220 | 40% |
| Incidents | 129 | 24% |
| Quakes | 100 | 18% |
| Ordnance | 24 | 4% |
| Nav aids | 14 | 3% |
| Surveys | 11 | 2% |
| Derelicts | 8 | 1% |
| Exercises | 8 | 1% |
| Missiles | 7 | 1% |
| Other | 6 | 1% |
| Containers | 6 | 1% |
| Wrecks | 4 | 1% |
| Debris | 3 | 1% |
| Volcanic | 3 | 1% |
| Spills | 2 | 0% |
Archive · 544 cancelled
- HYDROPAC 2209/20 · Cable ops2020-07-26 → 2020-07-31Cable operations in progress until 31 jul, alternate 01 aug thru 03 aug by cableship kddi ocean link in…
- HYDROPAC 2200/20 · Incidents2020-07-25 → 2020-08-14Distress signal received on 406 mhz: at 251214Z jul in vicinity 30-36N 124-00E
- HYDROPAC 2199/20 · Cable ops2020-07-25 → 2020-07-26Cable operations in progress until 27 jul, alternate 28 jul thru 02 aug by cableship kddi ocean link in…
- HYDROPAC 2106/20 · Cable ops2020-07-17 → 2020-07-25Cable operations by cableship kddi ocean link in progress until 22 jul, alternate 23 thru 25 jul in vicinity…
- HYDROPAC 2037/20 · Cable ops2020-07-10 → 2020-07-17Cable operations 11 thru 19 jul by cableship kddi ocean link in vicinity of trackline joining 25-46.0N…
- USGS-US6000ABCQ · Quakes2020-06-13 → 2020-06-16130 km wnw of naze, japan
- HYDROPAC 1541/20 · Incidents2020-05-24 → 2020-06-12Distress signal received in 26-12.7N 123-36.4E at 232121Z may
- HYDROPAC 1428/20 · Incidents2020-05-14 → 2020-05-29Distress signals received in vicinity 25-43N 123-30E at 132246Z may
- HYDROPAC 1427/20 · Incidents2020-05-13 → 2020-05-29Distress signals received in vicinity 25-59N 123-27E at 131602Z may
- HYDROPAC 1402/20 · Incidents2020-05-10 → 2020-05-29Distress signals received on 406 mhz from M/V zhedaiyu 10308 at 100031Z may in: a. 26-36-03N 133-24-32E
- USGS-US700099B2 · Quakes2020-05-03 → 2020-05-06139 km wsw of kushikino, japan
- HYDROPAC 896/20 · Cable ops2020-03-17 → 2020-04-01Cable operations 18 thru 28 mar alternate 29 thru 31 mar by cableship kddi ocean link in vicinity of…
- HYDROPAC 112/20 · Cable ops2020-01-10 → 2020-01-15Cable operations 10 thru 17 jan, alternate 18 thru 22 jan by cableship kddi ocean link in area bound by…
- HYDROPAC 4238/19 · Cable ops2019-12-24 → 2020-01-02Cable operations 25 thru 31 dec alternate 01 thru 05 jan 20 by cableship kddi ocean link in area bound by…
- HYDROPAC 3915/19 · Debris2019-11-28 → 2019-12-01Odas buoy adrift in vicinity 30-58.4N 124-01.5E at 272230Z nov
- HYDROPAC 3625/19 · Cable ops2019-11-02 → 2019-11-13Cable operations 03 thru 09, alternate 10 thru 17 nov by cableship kddi ocean link in area bound by 25-33.5N…
- HYDROPAC 3459/19 · Cable ops2019-10-20 → 2019-10-21Cable operations by M/V kddi ocean link 21 thru 27 oct, alternate 28 thru 31 oct in area bound by 25-33.5N…
- HYDROPAC 3244/19 · Incidents2019-10-01 → 2019-10-18Distress signal received in 25-59N 121-49E at 010759Z oct
- HYDROPAC 2601/19 · Incidents2019-08-13 → 2019-08-13Distress signal received on 406 mhz from vessel andreas k at 122247Z aug in: a. 31-47-49N 120-39-54E
- HYDROPAC 2584/19 · Derelicts2019-08-10 → 2019-08-30M/V pearl maya disabled and adrift due to engine failure in 31-29.90N 124-34.01E at 101517Z aug
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.